BOMB squad experts raced to a section of British motorway to investigate the death of a man who was killed when his car blew up in a huge fireball.

Explosives officers from the RAF were called to the horrific incident on the M11 just outside Cambridge after the man's car suddenly exploded into flames without coming into contact with any other vehicles.

It is understood one man was killed in the huge blast, which took place near junction 12 of the southbound carriageway at around 8.10am yesterday.

The dramatic incident was still shrouded in mystery yesterday afternoon, with police saying they are "not ruling anything out" with regards to the cause of the blast after witnesses said something within the vehicle had "obviously exploded".

Officers said there is no indication that a collision took place or that any other vehicles were involved.

Cambridge TV

Police said they are 'not ruling anything out' as they investigate the cause of the explosion

M11 southbound will be closed until this evening following a car fire near junction 12- diversion in place https://t.co/c4IDcqi03i

Police have closed the entire southbound carriageway at junction 13 whilst bomb disposal experts from a nearby RAF base comb the area for clues, with motorists being advised to avoid the area amid lengthy tailbacks. One lane of the northbound carriageway was also shut, with some local football matches being cancelled due to the chaos.

Witnesses at the scene described the moment the man's car suddenly blew up in a huge "fireball" and said they were baffled by the potential cause of the incident.

Stephen Macaulay, who was driving across a flyover near the scene, said: "As you looked down you could just see this unbelievable ball of fire. I've never seen a car on fire like this before

"All you could see was a huge ball of fire with black smoke billowing up out the top of it. It was just in the middle of the carriageway and cars were keeping away from it."

ITV News Anglia/Jonathon Stevens

There were huge tailbacks after police closed the motorway

ITV News Anglia/Jonathon Stevens

One witness described the scene as 'really shocking'

Describing the scene as "really shocking" he added: "Obviously something exploded, you'd have thought… you look back at that and you just thought, something's really gone up here."

A police spokeswoman said the bomb disposal squad was there as a precaution, but added officers are not ruling anything out at this stage.

The body of the man was expected to be removed from the scene yesterday evening.